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A vapour absorption refrigerator uses __________ as a refrigerant.

Heat Transfer, Mechanical Engineering, Refrigeration and Air Conditioning /
Question: A vapour absorption refrigerator uses __________ as a refrigerant.
[A].

water

[B].

ammonia

[C].

freon

[D].

aqua-ammonia

Answer: Option D

Explanation:

No answer description available for this question.

A vapour absorption refrigerator uses __________ as a refrigerant. Read More »

Heat Transfer, Mechanical Engineering, Refrigeration and Air Conditioning

In order to collect liquid refrigerant and to prevent it from going to a __________ , a device known as accumulator is used at the suction of compressor.

Heat Transfer, Mechanical Engineering, Refrigeration and Air Conditioning /
Question: In order to collect liquid refrigerant and to prevent it from going to a __________ , a device known as accumulator is used at the suction of compressor.
[A].

compressor

[B].

condenser

[C].

expansion valve

[D].

evaporator

Answer: Option A

Explanation:

No answer description available for this question.

In order to collect liquid refrigerant and to prevent it from going to a __________ , a device known as accumulator is used at the suction of compressor. Read More »

Heat Transfer, Mechanical Engineering, Refrigeration and Air Conditioning

In a pressure enthalpy chart, the space between the saturated liquid line and saturated vapour line, represents sub-cooled liquid region.

Heat Transfer, Mechanical Engineering, Refrigeration and Air Conditioning /
Question: In a pressure enthalpy chart, the space between the saturated liquid line and saturated vapour line, represents sub-cooled liquid region.
[A].

True

[B].

False

Answer: Option B

Explanation:

No answer description available for this question.

In a pressure enthalpy chart, the space between the saturated liquid line and saturated vapour line, represents sub-cooled liquid region. Read More »

Heat Transfer, Mechanical Engineering, Refrigeration and Air Conditioning

In a pressure enthalpy chart, the space to the left of the saturated liquid line represents

Heat Transfer, Mechanical Engineering, Refrigeration and Air Conditioning /
Question: In a pressure enthalpy chart, the space to the left of the saturated liquid line represents
[A].

wet vapour region

[B].

superheated vapour region

[C].

sub-cooled liquid region

[D].

none of these

Answer: Option C

Explanation:

No answer description available for this question.

In a pressure enthalpy chart, the space to the left of the saturated liquid line represents Read More »

Heat Transfer, Mechanical Engineering, Refrigeration and Air Conditioning

In a vapour compression system, the condition of refrigerant is dry saturated vapour

Heat Transfer, Mechanical Engineering, Refrigeration and Air Conditioning /
Question: In a vapour compression system, the condition of refrigerant is dry saturated vapour
[A].

before entering the compressor

[B].

after leaving the compressor

[C].

before entering the condenser

[D].

after leaving the condenser

Answer: Option A

Explanation:

No answer description available for this question.

In a vapour compression system, the condition of refrigerant is dry saturated vapour Read More »

Heat Transfer, Mechanical Engineering, Refrigeration and Air Conditioning

In a vapour compression refrigeration system, a throttle valve is used in place of an expander because

Heat Transfer, Mechanical Engineering, Refrigeration and Air Conditioning /
Question: In a vapour compression refrigeration system, a throttle valve is used in place of an expander because
[A].

it considerably reduces mass of the system

[B].

it improves the C.O.P., as the condenser is small

[C].

the positive work in isentropic expansion of liquid is very small

[D].

it leads to significant cost reduction

Answer: Option C

Explanation:

No answer description available for this question.

In a vapour compression refrigeration system, a throttle valve is used in place of an expander because Read More »

Heat Transfer, Mechanical Engineering, Refrigeration and Air Conditioning

Defrosting of a refrigerator may be done by stopping the compressor for a short period.

Heat Transfer, Mechanical Engineering, Refrigeration and Air Conditioning /
Question: Defrosting of a refrigerator may be done by stopping the compressor for a short period.
[A].

Correct

[B].

Incorrect

Answer: Option A

Explanation:

No answer description available for this question.

Defrosting of a refrigerator may be done by stopping the compressor for a short period. Read More »

Heat Transfer, Mechanical Engineering, Refrigeration and Air Conditioning

In a vapour compression system, the condition of refrigerant before passing through the condenser is

Heat Transfer, Mechanical Engineering, Refrigeration and Air Conditioning /
Question: In a vapour compression system, the condition of refrigerant before passing through the condenser is
[A].

saturated liquid

[B].

wet vapour

[C].

dry saturated vapour

[D].

superheated vapour

Answer: Option D

Explanation:

No answer description available for this question.

In a vapour compression system, the condition of refrigerant before passing through the condenser is Read More »

Heat Transfer, Mechanical Engineering, Refrigeration and Air Conditioning